Power stability, linewidth, beam quality
MIL-N-1645 is a 1645 nm CW laser. Used for long-distance telemetry, ranging, laser radars, designation. Laser. Key specifications: output / average power 1~1000 mW, power stability (rms, 4 hours±3℃) <5%, <3%, transverse mode Near TEM00. View specifications, datasheet and enquiry options from Precisometer.
Specifications
14 specification rows
| Output / average power | 1~1000 mW |
|---|---|
| Beam / notes | Laser |
| Power stability (rms, 4 hours±3℃) | <5%, <3% |
| Transverse mode | Near TEM00 |
| Beam divergence, full angle (mrad) | <3 |
| Warm-up time (minutes) | <10 |
| Cooled method | Air Cooled |
| Operating temperature (℃) | 15-35 |
| Power supply (100-240VAC) | RAD1PS |
| Expected lifetime (hours) | >10000 |
| Wavelength (nm) | 1645±1 |
| Output power (mW) | 1-1000 |
| Beam diameter at the aperture (1/e2,mm) | <3 |
| Beam height from base plate (mm) | 66 |
Application context
Applications named on this model’s datasheet, expanded with the model’s optical specifications.
MIL-N-1645: 1645 nm emission determines compatible optics, coatings and detectors for Long-distance telemetry. The catalogued beam parameter (Near TEM00) helps predict how the source will focus and propagate through the instrument.
MIL-N-1645: 1645 nm emission determines compatible optics, coatings and detectors for Ranging. The catalogued beam parameter (Near TEM00) helps predict how the source will focus and propagate through the instrument.
MIL-N-1645: 1645 nm emission determines compatible optics, coatings and detectors for Laser radars. The catalogued beam parameter (Near TEM00) helps predict how the source will focus and propagate through the instrument.
MIL-N-1645: 1645 nm emission determines compatible optics, coatings and detectors for Designation. The catalogued beam parameter (Near TEM00) helps predict how the source will focus and propagate through the instrument.
System integration
Use these checks to connect MIL-N-1645 to the surrounding optical, mechanical and control system. Every value shown is taken from this model's own specification record.
Technical FAQ
Cooled method: Air Cooled · Operating temperature (℃): 15-35. Provide the stated cooling method and keep the laser-head base thermally coupled; temperature drift moves wavelength, output power and beam pointing.
Transverse mode: Near TEM00 · Beam divergence, full angle (mrad): <3. Size the downstream optics from the stated beam diameter and divergence rather than from the aperture of the housing, and confirm the polarisation state before specifying isolators or polarising optics.
Share wavelength, operating mode, output power or pulse energy, linewidth or pulse width, delivery, control, and safety requirements and we will qualify the matching configuration and lead time.
Model selection
Compare MIL-N-1645 with the closest available models in the CW Lasers family. Confirm option-dependent values on the final configuration before ordering.
| Selection parameter | MIL-N-1645 (current) | TEM-F-1647DFB | MDL-III-1647DFB-SM |
|---|---|---|---|
| Wavelength | 1645 nm | 1647 nm | 1647 nm |
| Optical power / pulse energy | 1~1000 mW | 1~5 mW | 1~5 mW |
| Operating mode / pulse width | Confirm for this model | Confirm for this model | Confirm for this model |
| Beam quality | Near TEM00 | Confirm for this model | Confirm for this model |
Compare the MIL-N-1645 with nearby cw lasers across the wavelength range.
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